The issue of close air support by the United States Air Force in support of, primarily, the United States Army has been fractious for years. Air commanders have clashed continually with ground leaders over the proper use of aircraft in the support of ground operations. This is perhaps not surprising given the very different outlooks of the two services on what constitutes proper air support. Often this has turned into a competition between the two services for resources to execute and control close air support operations. Although such differences extend well back to the initial use of the airplane as a military weapon, in this book the author looks at the period 1946- 1973, a period in which technological advances in the form of jet aircraft, weapons, communications, and other electronic equipment played significant roles. Doctrine, too, evolved and this very important subject is discussed in detail. Close air support remains a critical mission today and the lessons of yesterday should not be ignored. This book makes a notable contribution in seeing that it is not ignored.